Number of n X n 0..2 arrays with no element equal to any value at offset (-1,-2), (0,-1) or (-1,0) and new values introduced in order 0..2.

A274744

Number of n X n 0..2 arrays with no element equal to any value at offset (-1,-2), (0,-1) or (-1,0) and new values introduced in order 0..2.

Terms

    a(0) =1a(1) =3a(2) =34a(3) =813a(4) =40242a(5) =4190533a(6) =920432562a(7) =427529873959

External references